Quadrant Dynamic with Automatic Plateau Limit Histogram Equalization (qdaplhe)
ثبت نشده
چکیده
In image processing, image enhancement is used to improve the image quality through a broad range of techniques such as contrast enhancement, color enhancement, dynamic range expansion and edge emphasis and so on. In consumer electronics, many histogram equalization based methods have been used in recent years. Many of these methods are complicated to implement and also some method will produce blocking artifacts and over enhancement. In order to increase the brightness preservation and to reduce the over enhancement, a hybrid of dynamic and clipped histogram equalization method named Quadrant Dynamic Automatic Plateau Limit Histogram Equalization method (QDAPLHE) is proposed.
منابع مشابه
Multi Histogram Equalization Based Contrast Enhancement for Images
The fundamental and important pre-processing stage in image processing is the image contrast enhancement technique. Histogram equalization is an effective contrast enhancement technique and thus in this paper, a histogram equalization based technique called Quadrant Dynamic with Automatic Plateau Limit Histogram Equalization (QDAPLHE) is introduced. In this method, a hybrid of dynamic and clipp...
متن کاملContrast Enhancement Using Brightness Preserving Histogram Plateau Limit Technique
-Contrast enhancement is an important factor in the gray scale images. One of the widely accepted contrast enhancement method is the Histogram equalization (HE). HE achieves comparatively better performance on almost all types of image but sometimes produces excessive visual deterioration. The proposed Contrast Enhancement using Brightness Preserving Histogram Plateau Limit (CEBPHPL) method pro...
متن کاملAlgorithms and Hardware Implementation of Real Time Automatic Gain Control Feature for Thermal Imager
Thermal imagers operating in the 3-5 micron and 8-12 micron spectral bands require Automatic Gain Control (AGC) to enhance the visual detection and identification of targets against varying atmospheric conditions. In this paper, two algorithms viz., plateau equalization and adaptive plateau equalization algorithms are discussed for implementing AGC. The MATLAB simulation results show the effect...
متن کاملA Novel Method of Determining Parameters of CLAHE Based on Image Entropy
Histogram equalization, which stretches the dynamic range of intensity, is the most common method for enhancing the contrast of image. Contrast Limited Adaptive Histogram Equalization (CLAHE), proposed by K. Zuierveld, has two key parameters: block size and clip limit. These parameters are mainly used to control image quality, but have been heuristically determined by users. In this paper, we p...
متن کاملAutomatic Photograph Enhancement
We propose a method of image enhancement, based on a spatial domain technique called histogram equalization. Traditional histogram equalization is only useful for images with backgrounds and foregrounds that are both bright or both dark, whereas our method works for images with high dynamic range. The technique is to segment the image into large regions with high contrast separations which are ...
متن کامل